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FormView - Multiple DataKeyNames - how do I retrieve one of the values?

Posted on 2010-11-25
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Last Modified: 2012-05-10
Hi
I need to get the value of one of CostID from my DataKeyNames in a FormView.  I have tried:

DataKey key = fvCostJob.DataKey["CostID"];
string costID = key.Value.ToString();

My code is:
<asp:FormView ID="fvCostJob" runat="server" CellPadding="4"
            DataKeyNames="CostID,LoadID" DataSourceID="SqlDataSource1" ForeColor="#333333">

The line that's causing the problem is:
DataKey key = fvCostJob.DataKey["CostID"];
Intellisense tells me "cannot implicitly convert type 'Object' to ...DataKey"
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Question by:Lorna70
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10 Comments
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 34212068
The DataKey collection doesn't return a DataKey object it returns the actual value of the key. So, if your CostID is an integer you would do something like:

    int costId = int.Parse(fvCostJob.DataKey["CostID"].ToString());

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Accepted Solution

by:
Sokrates earned 250 total points
ID: 34212280
DataKey key = fvCostJob.DataKey["CostID"]; ----> IS NOT NESESSARY

TRY THIS:
string costID = fvCostJob.DataKey["CostID"].ToString();
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Expert Comment

by:Greg Gamble
ID: 34213018
string xxx = fvCostJob.DataKey["CostID"];
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LVL 52

Expert Comment

by:Carl Tawn
ID: 34290396
Nice of you to ignore my post! Given that I put exactly the same thing earlier (ok, i assumed CostID was an int so did the cast, but the principle was the same)
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Expert Comment

by:Sokrates
ID: 34290503
With all the respect...
carl_tawn you are right to a point. If you see question it says:

DataKey key = fvCostJob.DataKey["CostID"];
string costID = key.Value.ToString();

Read carefully and answer straight to the point. If you compare our answers you will see:
1) you did not mention that  DataKey key =.... is not needed
2) costID is a string not an integer.
my answer was staight to the point

peace
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LVL 52

Expert Comment

by:Carl Tawn
ID: 34290533
Actually I think you'll find that I explained that the DataKey collection doesn't actually return a DataKey object, which is a little more detailed that "IS NOT NECESSARY".
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Author Comment

by:Lorna70
ID: 34290576
Sorry Carl but I was in a hurry so just gave points to the best answer.  I think you've helped me before so next time I'll make sure I allocate points to you :-)  Thanks.
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LVL 3

Expert Comment

by:Sokrates
ID: 34290746
The question was "I need to get the value of one of CostID from my DataKeyNames in a FormView" and two lines of code attached:
DataKey key = fvCostJob.DataKey["CostID"];
string costID = key.Value.ToString();
clean and clear i gave the solution..

"The DataKey collection doesn't return a DataKey object it returns the actual value of the key" it is not clear that is not needed.
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Author Comment

by:Lorna70
ID: 34290785
Now now boys lol!  You have both been really helpful and as I said, I'll assign points to Carl the next time he helps.  Think no more should be said now :-)
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LVL 3

Expert Comment

by:Sokrates
ID: 34290834
No worries Lorna70. Thanks for the points.     :)
carl_tawn i apologise if i disrespect you in any way...
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